Browse > Article
http://dx.doi.org/10.7855/IJHE.2012.14.6.085

Effectiveness of the Peripheral Transverse Line as Speed-Reduction Treatment on Korean Expressway Ramps  

Lee, Seongkwan Mark (Inter-American Development Bank)
Lee, Kiyoung (Korea Expressway Corporation)
Kim, Seokchool (Korea Expressway Corporation)
Publication Information
International Journal of Highway Engineering / v.14, no.6, 2012 , pp. 85-92 More about this Journal
Abstract
PURPOSES : Since expressways in South Korea are toll roads, many trumpet type interchanges exist, resulting in the installation of loop ramps very frequently. While the travel speed of the main lane is designed to be 100-110 km/h, the structure of a loop ramp is different and is designed for a minimum speed of 40 km/h. In fact, most of the actual travel speeds measured on the ramp exceed the designated speed, which has been a major problem in traffic safety. In this research, a type of pavement marking speed-reduction treatment called the "Peripheral Transverse Line" is installed on expressway loop ramps in order to study the change of driving speeds after the installation. METHODS : To verify statistically the change, this speed-reduction treatment has been installed on the Chungju interchange and the Yeoju junction. The driving speeds before the installation were compared with driving speeds both one month and five monthsafter the installation. RESULTS : As a result, the reductions of the average driving speeds after the treatment were statistically significant. More specifically, the average driving speeds of the Chungju interchange were reduced by 7.1-7.7 % for its tangent road section, and the speeds decreased by 8.5-9.5 % for its curve section. Similarly, in the Yeoju junction, an average speed reduction of 2.9-4.8 % for its tangent section was measured, along with 3.9% long-term speed reduction for its curve section. CONCLUSIONS : Since the pavement marking speed-reduction treatment has been partially proven to be effective from this research, we expect to expand this treatment and re-confirm the effect from a long-term perspective in the future.
Keywords
traffic safety; peripheral transverse line; speed-reduction method; independent t-test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Noh, K. S., J. H. Lee, J. M. Kim, and H. R. Jang (2010), Effectiveness of Pavement Marking for Speed Reduction by Using Driving Simulator, Journal of Korean Society of Road Engineers, v.12, no. 4, pp. 9-16   과학기술학회마을
2 Gates, T. J., X. Qin, and D. A. Noyce (2008), Effectiveness of Experimental Transverse-Bar Pavement Marking as Speed-Reduction Treatment on Freeway Curves, TRR 2056, pp.95-103
3 Griffin, L. I and R. N. Reinhardt (1995), A Review of Two Innovative Pavement Marking Patterns that have been Developed to Reduce Traffic Speeds and Crashes, Texas Transportation Institute
4 Katz, B. J. (2004), Pavement Markings for Speed Reduction, Final Report of the Traffic Control Devices Pooled Fund Study, Science Applications International Corporation, Turner-Fairbank Highway Research Center, pp.17-25.